Appendix: B
Double Seal Assembly Instructions
F-750-025-A / rev 12.20 – ZCM- ZCHM Series Metric Manual
11
4. Place the gland [9] with the outboard stationary seal so that it locates on its pilot in
the rear of the stuffing box.
Do not forget the o-ring [8] (GX5042814)
5. Tighten the 4 screws [11/10] (GX5501110) evenly and carefully.
6.
Prepare the shaft sleeve: Place the O-ring in the groove inside the sleeve, and the O-ring on
the shoulder’s face
– the double seal sub-assembly is now complete and can be
assembled onto the pump. Slide the shaft sleeve onto the stub shaft until it seats on
the shoulder of the shaft.
Continue pump assembly with step 6.
Figure 11: Double seal parts list
Number
Description
Qty. per pump
1
Stuffing Box
1
2
Inboard Stationary Seal
1
3
Shaft Sleeve
1
4
Inboard Rotating Seal
1
5
Seal Spring
1
6
Outboard Rotating Seal
1
7
Outboard Stationary Seal
1
8
Gland O-Ring
2
9
Gland
1
10
Washer
1
11
Hex Screw
1
